Look at the other titles form the same channel:
Black-sites are generally on Foreign soil.
The expression "fruit of the poisoned tree" is used in the legal profession to mean any evidence gather illegally or from a investigation predicate don illegally evidence and everything that comes as a result of these.
Suppose you work for the NSA and learn through the technically illegal wiretapping activities of a massive criminal conspiracy. Can you give the recordings to the FBI to use as evidence? No. Can you tell the FBI what you've heard and let them open in investigation to confirm it? Probably not. What you need is for someone to independently find sufficient evidence for the FBI to take notice and launch an investigation based on that. But you'd have to be very careful. You can't just launder damning info that you could only have obtained illegally through a few random plebs. So you operate by asking questions and prompting them to examine public info and put the pieced together themselves. But you must be very, very careful to never directly give them the info or else you risk tainting any subsequent investigation and risk giving defense lawyers a way to get the whole thing dismissed.
Welcome QAnon.
>Its about introducing a way to prosecute by way of anon digs?
That's my theory for why Q does what he does in the way he does it. He needed to give the FBI/DOJ valid reason to open investigations without poisoning the tree. More so in the earlier phases of this thing out ours. Now I think he's just dropping occasional updates and keeping everyone engaged.